The position of an object as a function of time is given by x = bt 2 - ct, where b = 2.0 m/s2 and c = 6.7 m/s, and x and t are in si units. what is the instantaneous velocity of the object when t = 4.1

The independent variable in this experiment is the angle at which the light from the ray box strikes the mirror.hope this .

How is it possible that phylogenies based on sequences from nuclear genomes and organellar genomes (i.e., chloroplasts and mitochondria) from the same group of species yield phylogenetic trees with different branching orders?   answer :   the genome of the endosymbiont is more closely related to members of the group in which it originally evolved, while the nuclear genome of the engulfing organism has its own evolutionary trajectory.